CN220828589U - Rescue processing device is locked to section of crossing pipe push pipe construction aircraft nose - Google Patents

Abstract

The utility model provides a rescue treatment device for locking a pipe jacking construction machine head in a river section, which comprises a pull beam, wherein the pull beam comprises a first flange plate, a web plate and a second flange plate which are fixedly connected; a plurality of connecting steel plates are fixedly arranged between the upper ends of the first flange plates and the second flange plates, and reinforcing steel cables are fixedly arranged on the outer side surfaces of the connecting steel plates. The locking rescue treatment device for the pipe-jacking construction machine head of the river-crossing section has the advantages of wide application range, safe construction and short construction period.

Description

Rescue processing device is locked to section of crossing pipe push pipe construction aircraft nose

Technical Field

The utility model relates to the technical field of municipal construction, in particular to a rescue treatment device for locking a machine head of a pipe-jacking construction of a river section.

Background

In municipal project pipe network pipe jacking construction field, there is construction of penetrating river bottom pipe jacking. Due to the disturbance of mechanical pipe jacking construction, the thickness of an upper coating layer is insufficient, geological defects and the like, and particularly, piping breakdown easily occurs at the river bottom at a high water level of the river bed. River water floods into the top pipe well, so that the pipeline, the working well and the pipe head are submerged by water, the pipe head is burnt out, and the construction cannot be continued. How to take out the machine head for maintenance and complete the construction of the rest jacking pipe is a difficult task.

The locking of the mechanical pipe jacking machine head generally adopts a mode of 'skylight opening', namely, the machine head is excavated at the locking position of the machine head, and the machine head is taken out. The method has certain limitation, and is not applicable to places with large water seepage in river channels.

Disclosure of utility model

The utility model aims to provide a locking rescue treatment device for a pipe jacking construction machine head in a river section, which has a wide application range and aims to solve the problem that the locking and taking out of the existing mechanical pipe jacking machine head have certain construction limitations.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the device comprises a pull beam, wherein the pull beam comprises a first flange plate, a web plate and a second flange plate which are fixedly connected; the novel flange plate is structurally characterized in that a plurality of connecting steel plates are fixedly arranged between the upper ends of the first flange plate and the second flange plate, and reinforcing steel cables are fixedly arranged on the outer side faces of the connecting steel plates.

Further, a jack is fixedly connected to the outer side face of the first flange plate or the outer side face of the second flange plate.

Further, the steel bar inhaul cable is perpendicular to the pull beam.

Further, two connecting steel plates are arranged.

Further, the pull beam is an H-shaped steel beam or an I-shaped steel beam.

Compared with the prior art, the utility model has the beneficial effects that: the locking rescue treatment device for the pipe-jacking construction machine head of the river-crossing section has the advantages of wide application range, safe construction, short construction period and the like.

Drawings

FIG. 1 is a schematic view of a construction flow for taking out a machine head by adopting the device of the utility model;

FIG. 2 is a schematic plan view of a cofferdam;

FIG. 3 is a schematic cross-sectional view of a cofferdam;

FIG. 4 is a plan view of an artificial push bench;

FIG. 5 is a cross-sectional view of a catheter installation;

FIG. 6 is a cross-sectional view of a reverse-topped back wall casting;

FIG. 7 is a view showing the state of use of the device of the present utility model;

Fig. 8 is a schematic structural view of a joint between a reinforcing steel bar inhaul cable and a connecting steel plate in the present utility model;

FIG. 9 is a schematic view of the structure of the gap filling after the nose is removed by the device of the present utility model.

In the figure: 1. jacking pipes; 2. the bottom of the inner wall of the jacking pipe; 3. the outer wall of the jacking pipe is jacked; 4. river bed hard bottom; 5, sealing the bottom by cement concrete; 6. elevation of the weir crest; 7. a sand bag; 8. a composite geomembrane; 9. a retaining wall; 10. a back wall; 11. manually jacking the pipe section; 12. concrete; 13. a guide rail; 14. manually jacking the inner wall of the pipe; 15. the outer wall of the original jacking pipe or the machine head; 16. manually jacking the outer wall of the pipe; 17. a top pipe well bottom plate; 18. back wall is propped up reversely; 19. the inner wall of the pipe jacking well; 20. wall of pipe jacking well; 21. pulling a beam; 22. a first flange plate; 23. a web; 24. a second flange plate; 25. connecting steel plates; 26. a reinforcing steel bar inhaul cable; 27. a jack; 28. cement paste;

A. the position of the pipe jacking machine head; B. the locking position of the machine head;

L1, cofferdam top line; l2, cofferdam bottom line; and L3, jacking the pipe jacking center axis.

Detailed Description

The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.

As shown in fig. 7-8, the locking rescue handling device for the pipe-jacking construction machine head of the river section according to the embodiment comprises a pull beam 1, wherein the pull beam 21 comprises a first flange plate 22, a web plate 23 and a second flange plate 24 which are fixedly connected. The structure is characterized in that a plurality of connecting steel plates 25 are fixedly arranged between the upper ends of the first flange plate 22 and the second flange plate 24, and reinforcing steel cables 26 are fixedly arranged on the outer side surfaces of the connecting steel plates 25.

As shown in fig. 7, in this embodiment, a jack 27 is fixedly connected to an outer side surface of the first flange plate 22 or an outer side surface of the second flange plate 24.

As shown in fig. 8, in this embodiment, the reinforcing steel bar stay 26 is perpendicular to the stay 21.

As shown in fig. 8, the connecting steel plates 25 are provided in two.

As shown in fig. 8, in this embodiment, the beam 21 is an H-beam or i-beam.

The working principle of taking out the machine head by adopting the locking rescue treatment device of the river section jacking pipe construction machine head of the embodiment is as follows: firstly, measuring the locking position of a machine head and the axis of a jacking pipe by using a total station; manually jacking a large-pipe-diameter jacking pipe from a receiving well to a locking position of a machine head; cleaning rock soil near the machine head, pouring concrete at the bottom of the manual jacking pipe (the elevation is consistent with the elevation of the machine head), and installing channel steel at the top of the concrete for guiding the machine head and the rest jacking pipe; and then welding the head of the pipe jacking machine by using a reinforcing steel bar, taking out the head and completing jacking construction of the pipeline in a mode of front pulling and back pushing or front pulling, and finally grouting and plugging gaps among the pipelines.

As shown in fig. 1 to 9, a specific embodiment of taking out a head by adopting the locking rescue handling device of the head of the river section pipe jacking construction of the present embodiment is as follows:

The rain and sewage diversion reconstruction engineering of the main urban area of a certain city mainly comprises the current state closure main pipe relocation, rain and sewage mixed connection reconstruction, sewage pipe network construction and the like. The rain and sewage diversion reconstruction project for a certain river blade area comprises 4 sections of river-crossing section jacking pipes, and in the jacking pipe construction process, roof falling of different degrees exists or machine head locking occurs due to water gushing.

When W16.49-W16.47 is carried out and is crossed the river reach pipe jacking construction, water is gushed when carrying out 9 th pipeline jacking, and the aircraft nose is burnt out, can't continue jacking construction, adopts a cross river reach pipe jacking construction aircraft nose locking rescue processing apparatus of this embodiment to take out the aircraft nose, takes out the construction steps of aircraft nose as follows:

Step one: preparation for construction

Before the manual pipe jacking reverse jacking rescue, preparation works such as construction electricity, woven bags, medium coarse sand, large-pipe-diameter pipe jacking pipes, illumination and the like are needed to be done, so that the safety measures of a construction site are ensured to be in place, and the submerged pump illumination equipment is checked regularly. In order to accelerate the construction progress and ensure the construction safety, the riverbed needs to be cleaned in advance, and middle coarse sand is firstly filled in the woven bags on the shore, so that the cofferdam construction is facilitated; and the pumping and exhausting are continuously carried out in the top pipe well and the cofferdam foundation pit, so that the water flow is prevented from flooding the pipeline.

Step two: measurement lofting

As shown in fig. 2 and 3, the pipeline jacking axis line is paid out, the cofferdam height, the gradient and the like are determined according to the locking position of the field machine head. Lofting the position and the axis of the machine head by using a total station, and determining the direction and the distance of the manual jacking pipe; and positioning and paying off the edge line of the cofferdam bottom, marking the elevation of the top of the cofferdam at the retaining wall as a positioning basis for cofferdam construction, and controlling the elevation of the top of the cofferdam.

Step three: cofferdam construction and pumping drainage

As shown in fig. 2 and 3, the woven bags filled with medium coarse sand are filled according to the design requirement, and the overlapping width of the woven bags is one third of the length. The coarse sand capacity in the woven bag is 1/2-2/3 of the bag capacity, and the bag mouth is stitched tightly. Building cofferdam under water and in 0.5m above water, manually matching a long-arm digging machine when stacking sand bags, manually bagging and carrying the sand bags into a bucket of the long-arm digging machine, throwing the sand bags into a design area by the long-arm digging machine, and stacking the sand bags in order in a staggered manner from top to bottom to left to right as much as possible, wherein the rest cofferdam is stacked manually according to the design in layers. In order to prevent the weir slope from being washed by water flow, the cofferdam is wrapped with a 350g/m2 composite geomembrane, and a woven sandbag is used for pressing the roof and the presser foot. The cofferdam construction adopts layered and segmented construction, the height of each layer is controlled to be 0.3-0.5m, and the plane construction sequence is from upstream to downstream.

And after the cofferdam construction is completed, pumping and discharging water in the cofferdam and the top pipe well to the downstream sewage well by adopting a 7.5KW sewage pump.

Step four: manual push pipe

As shown in fig. 4, the receiving well opening is broken (adjusted according to the actual pipe jacking axis), the opening water stop device is installed, the track and the base are installed, the back wall is poured in the original receiving well, after the back wall meets the design requirement, the jack is installed, the manual pipe jacking test jacking construction and jacking construction are carried out, and the inner diameter of the manual pipe jacking is required to be larger than 1.25 times of the outer diameter of the designed pipe jacking. After the soil body/rock body in front of the pipeline is excavated manually, the soil body/rock body is conveyed to the outside of the pipe jacking well from the inside of the pipe jacking well through a crane, the pipeline is jacked into again, the manual excavation is continued after the pipeline is jacked into until the soil body/rock body is excavated to the locking position of the head of the pipe jacking machine, rock soil/barriers around the head are cleared through tools such as a hand-held pneumatic pick or a water mill drill, and the like, the manual pipe jacking is continued to be jacked into, so that the head and the manual pipe jacking are partially overlapped.

Step five: guide rail installation and back wall pouring after reverse jacking

As shown in fig. 5 and 6, after the cleaning of the head position is completed, concrete is poured at the bottom of the large-diameter pipe-jacking pipeline, the pouring thickness is flush with the bottom of the outer diameter of the original pipe-jacking pipeline, the concrete is used as a basis for ejection of the head and subsequent jacking of the original designed pipeline, and channel steel is installed as a guide rail for guiding and reducing jacking friction force. Two back walls are cast on two sides of the opening of the artificial pipe jacking well by C30 concrete, the thickness of the back walls is not less than 0.5m, and the height of the back walls exceeds the height of the opening.

Step six: cable installation

The steel bar inhaul cable is cut into standard lengths matched with the pipe jacking well in size by using a steel bar cutting machine before the steel bar inhaul cable is put into the well, the recommended length is 3m, the steel bar inhaul cable is connected in a double-sided lap joint full welding mode after the steel bar inhaul cable is put into the well, and the lap joint length is calculated and determined. The reinforcing steel bar inhaul cable is connected with the machine head in a welding mode, and the lap joint length is equal to the lap joint length between the inhaul cable and the inhaul cable. The two inhaul cables are installed at the left side and the right side of the machine head respectively, and the installation heights are guaranteed to be consistent.

Step seven: pull beam installation

As shown in fig. 7 and 8, the back wall can be installed by pouring, and a pull beam (a connection mode between a pull rope and the jack) can be installed after the back wall is installed for transmitting the jacking force. The bracing beam adopts I-steel, and the specification and the model are determined through checking. When the inhaul cable is connected with the pull beam, 2 steel plates with the thickness of 10mm are welded on the I-steel manually, the welding part is selected between two legs of the I-steel, the distance between the two steel plates is actually determined on site, and the steel bars and the pull beam are connected in a mode of welding with the steel plates; the pull beam is connected with the jack in a welding mode.

Step eight: machine head ejection

After the track is installed, the original mechanical jacking device can be used for jacking at the tail end of the mechanical jacking pipe, if the pipeline can be normally jacked, the mechanical jacking pipe can be directly adopted for jacking, and the trend of the jacking pipe is controlled in the jacking process. If the jacking force of the pipeline can not meet the jacking requirements of the machine head and the pipeline, jack installation, track installation, inhaul cable and pull beam welding installation are carried out on the side of the manual pipe jacking well, and then reverse jacking operation of the machine head is started. The jacking steps are as follows: the welding of the steel bar inhaul cable is completed, the jack is jacked in, the jacking is carried out for 1 stroke, the stretched steel bar inhaul cable is cut off, the jack is retracted, the steel bar inhaul cable is welded again, and the jack is jacked in. And circulating the steps until the machine head reversely pushes into the pipe jacking well, then hanging the machine head away from the pipe jacking well by adopting an automobile crane, and pushing the rest small-pipe-diameter pipeline to the locking position of the machine head so as to tightly connect the pipelines.

Step nine: grouting between pipes

As shown in fig. 9, after the machine head is taken out and the pipeline is installed, the gap between the inner wall of the manual pipe jacking pipe and the outer wall of the mechanical pipe jacking pipe is required to be filled, so that the problems of uneven sedimentation of the pipeline and the like caused by water flow washing or other reasons in the later period are prevented. The side can be taken out from the machine head, the pipe orifice gap is sealed in a bricklaying mode, and cement paste is injected into the gap for filling before the gap is completely sealed.

The device of the embodiment reduces the adverse effect caused by the need of large excavation of the machine head when the machine head is taken out smoothly, completes the construction of the rest section of jacking pipe and ensures the quality of the jacking pipe. The method has the advantages of higher construction mechanization degree, no day and night construction restriction, construction risk intersection, common cost investment and small influence on the periphery.

When the jacking pipe is in construction, the woven bag filled with medium coarse sand and the geomembrane have good water retaining effect, so that the cofferdam can be effectively prevented from being washed out, the safety in the cofferdam is kept, and the pollution to water flow in a river channel is reduced; the manual pipe jacking reverse jacking machine head has high construction speed and lower cost; the gap grouting between the inner wall of the manual pipe jacking pipe and the outer wall of the mechanical pipe jacking pipe can avoid the problems of uneven sedimentation and the like of the pipe caused by water flow scrubbing or other reasons in the later period; the construction equipment of the construction method is simple in matching and high in operability (cofferdam and diversion scheme design is required to be automatically carried out according to water flow conditions), the safety coefficient is high, and materials are convenient to obtain.

The locking rescue treatment device for the pipe-jacking construction machine head of the river-crossing section has the advantages of being wide in application range, safe to construct, short in construction period and the like.

The foregoing examples are set forth in order to provide a more thorough description of the present utility model, and are not intended to limit the scope of the utility model, since modifications of the present utility model, in which equivalents thereof will occur to persons skilled in the art upon reading the present utility model, are intended to fall within the scope of the utility model as defined by the appended claims.

Claims (5)

1. The utility model provides a cross river section pipe jacking construction aircraft nose locking rescue processing apparatus, includes draw beam (21), draw beam (21) include fixed first flange board (22), web (23) and second flange board (24) that link to each other; the novel flange is characterized in that a plurality of connecting steel plates (25) are fixedly arranged between the upper ends of the first flange plate (22) and the second flange plate (24), and reinforcing steel cables (26) are fixedly arranged on the outer side surfaces of the connecting steel plates (25).

2. The device for rescuing and locking the pipe-jacking construction machine head of the river section according to claim 1, wherein a jack (27) is fixedly connected to the outer side surface of the first flange plate (22) or the outer side surface of the second flange plate (24).

3. The device for rescuing from locking of a pipe-jacking construction machine head of a river section according to claim 1, wherein the steel bar inhaul cable (26) is perpendicular to the pull beam (21).

4. The device for rescuing and locking the pipe-jacking construction machine head in the river section according to claim 1, wherein two connecting steel plates (25) are arranged.

5. The device for rescuing and locking a pipe-jacking construction head in a river section according to any one of claims 1 to 4, wherein said bracing beam (21) is an H-shaped steel beam or an i-shaped steel beam.